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KLS to KOS: distance & flight time
Kelso (Southwest Washington Regional Airport) → Sihanoukville (Sihanoukville International Airport)
7,577 mi
12,193 km · 6,584 nm
15h 19m
estimated nonstop flight time
+14h
time difference · heading northwest
See live KLS→KOS fares Phone-only fares on this route — call free
Flight time details
7,577 miles nonstop takes roughly 15h 19m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- KOS — Sihanoukville International Airport · Sihanoukville, Cambodia
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near KLS
- PDX · Portland International Airport39 mi away
- CLS · Chehalis Centralia Airport39 mi away
- HIO · Portland Hillsboro Airport40 mi away
- TTD · Portland Troutdale Airport46 mi away
Near KOS
- PQC · Phu Quoc International Airport37 mi away
- PNH · Phnom Penh International Airport106 mi away
- VKG · Rach Gia Airport110 mi away
- KZC · Kampong Chhnang Airport132 mi away
Frequently asked questions
How far is KLS from KOS?
The flight distance from Kelso (KLS) to Sihanoukville (KOS) is 7,577 miles (12,193 km, 6,584 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to KOS?
A nonstop flight takes about 15h 19m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Kelso and Sihanoukville?
Sihanoukville is 14 hours ahead of Kelso.
What is the cheapest way to fly from KLS to KOS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–KOS that never appear on search engines, with no booking fees.